Sandbox

SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  IF(
    shared_descr.product_id IS NOT NULL, 
    shared_descr.product, descr1.product
  ) as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id, 
  cscart_ec_table_booking_system.booking_type as booking_type 
FROM 
  cscart_products as products 
  LEFT JOIN cscart_product_descriptions as descr1 ON descr1.product_id = products.product_id 
  AND descr1.lang_code = 'en' 
  LEFT JOIN cscart_product_prices as prices ON prices.product_id = products.product_id 
  AND prices.lower_limit = 1 
  LEFT JOIN cscart_companies AS companies ON companies.company_id = products.company_id 
  INNER JOIN cscart_products_categories as products_categories ON products_categories.product_id = products.product_id 
  INNER JOIN cscart_categories ON cscart_categories.category_id = products_categories.category_id 
  AND (
    cscart_categories.usergroup_ids = '' 
    OR FIND_IN_SET(
      0, cscart_categories.usergroup_ids
    ) 
    OR FIND_IN_SET(
      1, cscart_categories.usergroup_ids
    )
  ) 
  AND cscart_categories.status IN ('A', 'H') 
  AND cscart_categories.storefront_id IN (0, 1) 
  LEFT JOIN cscart_ult_product_descriptions shared_descr ON shared_descr.product_id = products.product_id 
  AND shared_descr.company_id = 1 
  AND shared_descr.lang_code = 'en' 
  LEFT JOIN cscart_ec_table_booking_system ON cscart_ec_table_booking_system.product_id = products.product_id 
WHERE 
  1 
  AND cscart_categories.category_id IN (
    166, 165, 167, 168, 169, 170, 171, 172, 
    174, 175, 176, 177, 178, 179, 180, 181, 
    182, 199, 185, 186, 187, 188, 189, 190, 
    191, 194, 193, 195, 196, 197, 198, 200, 
    201, 202, 234, 235, 236, 237, 238, 240, 
    254, 255, 263
  ) 
  AND companies.status IN ('A') 
  AND (
    products.usergroup_ids = '' 
    OR FIND_IN_SET(0, products.usergroup_ids) 
    OR FIND_IN_SET(1, products.usergroup_ids)
  ) 
  AND products.status IN ('A') 
  AND prices.usergroup_id IN (0, 0, 1) 
  AND products.parent_product_id = 0 
GROUP BY 
  products.product_id 
ORDER BY 
  product asc, 
  products.product_id ASC 
LIMIT 
  0, 96

Query time 0.00261

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "23.85"
    },
    "ordering_operation": {
      "using_filesort": true,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": false,
        "nested_loop": [
          {
            "table": {
              "table_name": "companies",
              "access_type": "system",
              "possible_keys": [
                "PRIMARY"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 1,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.20",
                "prefix_cost": "0.00",
                "data_read_per_join": "5K"
              },
              "used_columns": [
                "company_id",
                "status",
                "company"
              ]
            }
          },
          {
            "table": {
              "table_name": "shared_descr",
              "access_type": "system",
              "possible_keys": [
                "PRIMARY",
                "product_id",
                "company_id"
              ],
              "rows_examined_per_scan": 0,
              "rows_produced_per_join": 1,
              "filtered": "0.00",
              "const_row_not_found": true,
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.20",
                "prefix_cost": "0.00",
                "data_read_per_join": "3K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "company_id",
                "product"
              ]
            }
          },
          {
            "table": {
              "table_name": "cscart_categories",
              "access_type": "ALL",
              "possible_keys": [
                "PRIMARY",
                "c_status",
                "p_category_id"
              ],
              "rows_examined_per_scan": 83,
              "rows_produced_per_join": 1,
              "filtered": "2.07",
              "cost_info": {
                "read_cost": "19.74",
                "eval_cost": "0.34",
                "prefix_cost": "20.08",
                "data_read_per_join": "4K"
              },
              "used_columns": [
                "category_id",
                "storefront_id",
                "usergroup_ids",
                "status"
              ],
              "attached_condition": "((`atulecarter_atul_demo5`.`cscart_categories`.`category_id` in (166,165,167,168,169,170,171,172,174,175,176,177,178,179,180,181,182,199,185,186,187,188,189,190,191,194,193,195,196,197,198,200,201,202,234,235,236,237,238,240,254,255,263)) and ((`atulecarter_atul_demo5`.`cscart_categories`.`usergroup_ids` = '') or find_in_set(0,`atulecarter_atul_demo5`.`cscart_categories`.`usergroup_ids`) or find_in_set(1,`atulecarter_atul_demo5`.`cscart_categories`.`usergroup_ids`)) and (`atulecarter_atul_demo5`.`cscart_categories`.`status` in ('A','H')) and (`atulecarter_atul_demo5`.`cscart_categories`.`storefront_id` in (0,1)))"
            }
          },
          {
            "table": {
              "table_name": "products_categories",
              "access_type": "ref",
              "possible_keys": [
                "PRIMARY",
                "pt"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "atulecarter_atul_demo5.cscart_categories.category_id"
              ],
              "rows_examined_per_scan": 2,
              "rows_produced_per_join": 3,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
                "read_cost": "1.79",
                "eval_cost": "0.69",
                "prefix_cost": "22.56",
                "data_read_per_join": "55"
              },
              "used_columns": [
                "product_id",
                "category_id"
              ]
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "status",
                "idx_parent_product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "atulecarter_atul_demo5.products_categories.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "9.56",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.07",
                "prefix_cost": "23.25",
                "data_read_per_join": "1K"
              },
              "used_columns": [
                "product_id",
                "product_type",
                "status",
                "company_id",
                "usergroup_ids",
                "parent_product_id"
              ],
              "attached_condition": "((`atulecarter_atul_demo5`.`products`.`company_id` = '1') and (`atulecarter_atul_demo5`.`products`.`parent_product_id` = 0) and ((`atulecarter_atul_demo5`.`products`.`usergroup_ids` = '') or find_in_set(0,`atulecarter_atul_demo5`.`products`.`usergroup_ids`) or find_in_set(1,`atulecarter_atul_demo5`.`products`.`usergroup_ids`)) and (`atulecarter_atul_demo5`.`products`.`status` = 'A'))"
            }
          },
          {
            "table": {
              "table_name": "cscart_ec_table_booking_system",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "4",
              "ref": [
                "atulecarter_atul_demo5.products_categories.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.07",
                "prefix_cost": "23.31",
                "data_read_per_join": "57"
              },
              "used_columns": [
                "product_id",
                "booking_type"
              ],
              "attached_condition": "<if>(is_not_null_compl(cscart_ec_table_booking_system), (`atulecarter_atul_demo5`.`cscart_ec_table_booking_system`.`product_id` = `atulecarter_atul_demo5`.`products_categories`.`product_id`), true)"
            }
          },
          {
            "table": {
              "table_name": "descr1",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id",
                "lang_code"
              ],
              "key_length": "9",
              "ref": [
                "atulecarter_atul_demo5.products_categories.product_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.00",
                "eval_cost": "0.07",
                "prefix_cost": "23.38",
                "data_read_per_join": "1K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "product"
              ]
            }
          },
          {
            "table": {
              "table_name": "prices",
              "access_type": "ref",
              "possible_keys": [
                "usergroup",
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "key": "usergroup",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "atulecarter_atul_demo5.products_categories.product_id"
              ],
              "rows_examined_per_scan": 2,
              "rows_produced_per_join": 0,
              "filtered": "92.12",
              "using_index": true,
              "cost_info": {
                "read_cost": "0.34",
                "eval_cost": "0.12",
                "prefix_cost": "23.85",
                "data_read_per_join": "14"
              },
              "used_columns": [
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "attached_condition": "((`atulecarter_atul_demo5`.`prices`.`lower_limit` = 1) and (`atulecarter_atul_demo5`.`prices`.`usergroup_id` in (0,0,1)))"
            }
          }
        ]
      }
    }
  }
}

Result

product_id	product	company_name	product_type	booking_type
148	16GB A Series Walkman Video MP3	CS-Cart	P	R
180	18-55mm Portrait Lens	CS-Cart	P
18	3D Blu-ray Disc™ Player (BD-D7000)	CS-Cart	P
16	3D Blu-ray Disc™ Player (BD-D7500)	CS-Cart	P
4	40" Class (40.0" Diag.) LED 5003 Series TV	CS-Cart	P
5	46" Class (45.9" Diag.) LCD 610 Series TV	CS-Cart	P
23	5.1 Channel Blu-ray 3D Home Theater System	CS-Cart	P
24	5.1 Channel Blu-ray 3D Home Theater System	CS-Cart	P
1	65" Class (64.5" Diag.) LED 8000 Series Smart TV	CS-Cart	P
22	7.1 Channel Blu-ray 3D Home Theater System	CS-Cart	P
149	8GB E Series Walkman Video MP3	CS-Cart	P
227	Acer 3D Series HN274H bmiiid	CS-Cart	P
190	AF-S DX NIKKOR 10-24mm f/3.5-4.5G ED	CS-Cart	P
189	AF-S NIKKOR 14-24mm f/2.8G ED	CS-Cart	P
245	Apple - iPhone 5c 32GB Cell Phone - Green	CS-Cart	P
238	Apple iPhone 4S Black	CS-Cart	P
239	Apple iPhone 4S White	CS-Cart	P
242	Apple iPod Classic Black	CS-Cart	P
243	Apple iPod Classic White	CS-Cart	P
241	Apple® - iPad® with Retina® display Wi-Fi - 32GB - White	CS-Cart	P
240	Apple® - iPad® with Retina® display Wi-Fi - 64GB - Black	CS-Cart	P
214	ASUS CP6130	CS-Cart	P
217	ASUS CP6230	CS-Cart	P
218	ASUS Essentio CP1130	CS-Cart	P
207	Asus USB-N53	CS-Cart	P
59	AVH-P4400BH	CS-Cart	P
58	AVH-P8400BH	CS-Cart	P
60	AVIC-Z130BT	CS-Cart	P
172	Compact Full HD Camcorder	CS-Cart	P
134	Creative ZEN Style M300 MP3 Player 16GB (Black)	CS-Cart	P
135	Creative ZEN Touch 2 MP3 Player 8GB (Black)	CS-Cart	P
168	D300S (Body Only)	CS-Cart	P
167	D3100 + 18-55 VR Lens Kit	CS-Cart	P
169	D5100 + AF-S DX NIKKOR 18-55mm f/3.5-5.6G VR Lens Kit	CS-Cart	P
42	DEH-1300MP	CS-Cart	P
39	DEH-80PRS	CS-Cart	P
40	DEH-P8400BH	CS-Cart	P
205	DIR-657 HD Media Router 1000	CS-Cart	P
37	DPX308U	CS-Cart	P
74	Droid 3	CS-Cart	P
73	DROID BIONIC	CS-Cart	P
71	DROID INCREDIBLE 2	CS-Cart	P
75	DROID PRO	CS-Cart	P
72	DROID RAZR	CS-Cart	P
70	EVO Design 4G	CS-Cart	P
156	Extra Bass Headphones – 70mm	CS-Cart	P
175	F50 Flash Memory 52x Zoom Camcorder (Silver)	CS-Cart	P
43	FH-P8000BT	CS-Cart	P
76	FLIPSIDE with MOTOBLUR	CS-Cart	P
56	GM-6500F	CS-Cart	P
57	GM-D8500M	CS-Cart	P
30	GO 2535 TM WTE	CS-Cart	P
246	GoPro - Hero3+ Black Edition Camera	CS-Cart	P
208	H.264 Megapixel Surveillance Camera TL-SC3430	CS-Cart	P
173	H300 Long Zoom Compact Full HD Camcorder (Black)	CS-Cart	P
229	HP 2711x 27" LED Monitor	CS-Cart	P
211	HP Officejet Pro 8600 Premium e-All-in-One Printer	CS-Cart	P
210	HP Photosmart Plus e-All-in-One Printer - B210a	CS-Cart	P
209	HP Scanjet G3110 Scanner	CS-Cart	P
67	HTC Wildfire S - White (T-Mobile)	CS-Cart	P
25	HW-D7000 AV Receiver with built-in Blu-ray Disc® Player	CS-Cart	P
213	Intel® Boxed Intel® Core™ i7-2600	CS-Cart	P
215	Intel® Core™ i7 processor Extreme Edition 980X – i7-980X	CS-Cart	P
226	Intel® Core™ i7 Processor i7-950	CS-Cart	P
154	JR900 Wireless Headphones	CS-Cart	P
53	KFC-W3012	CS-Cart	P
52	KFC-W3013PS	CS-Cart	P
228	LG D2342P-PN	CS-Cart	P
161	MV800 16.1 Megapixel MultiView Compact Digital Camera	CS-Cart	P
165	Nikon 1 J1 One-Lens Kit White	CS-Cart	P
166	Nikon 1 J1 Two-Lens Wide Angle Kit Red	CS-Cart	P
86	Nokia 700	CS-Cart	P
106	Nokia E5-00	CS-Cart	P
105	Nokia Lumia 800	CS-Cart	P
247	Nokia N1 Pad 7.9" Quad-Core 64bit 2.3GHz 2GB 32GB Android 5.0	CS-Cart	P
101	Nokia X3-02	CS-Cart	P
33	nüvi® 2455LT	CS-Cart	P
32	nüvi® 3450	CS-Cart	P
163	NX200 20.3 Megapixel Compact System Camera	CS-Cart	P
244	Packard Bell OneTwo	CS-Cart	P
212	Panasonic KX-MB2000 24PPM 3-in-1 Monochrome Laser MFP	CS-Cart	P
155	Porta Pro KTC On-Ear Headphone	CS-Cart	P
55	PRS-D800	CS-Cart	P
69	Rhyme	CS-Cart	P
206	RT-N66U Dual-Band Wireless-N900 Gigabit Router	CS-Cart	P
184	Samsung 30mm NX Pancake Lens	CS-Cart	P
183	Samsung 50-200mm NX Telephoto OIS Lens	CS-Cart	P
133	Samsung Galaxy Player 4.0	CS-Cart	P
132	Samsung Galaxy Player 5.0	CS-Cart	P
125	Samsung Galaxy S II	CS-Cart	P
120	Samsung Galaxy S II, Epic 4G Touch (Black)	CS-Cart	P
223	Samsung Galaxy Tab 8.9 (Wi-Fi Only) - 32GB Metallic Gray	CS-Cart	P
225	Samsung Galaxy Tab™ 7.0" (Verizon)	CS-Cart	P
224	Samsung Galaxy Tab™ 8.9 (AT&T)	CS-Cart	P
146	Sansa Clip+ MP3 Player (Blue) - 4GB	CS-Cart	P
147	Sansa Clip+ MP3 Player (Red) - 4GB	CS-Cart	P