Sandbox

SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  descr1.product as product, 
  companies.company as company_name, 
  products.product_type, 
  products.parent_product_id, 
  descr1.full_description as full_description 
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) 
WHERE 
  1 
  AND cscart_categories.category_id IN (221) 
  AND products.product_id NOT IN (46) 
  AND companies.status IN ('A') 
  AND (
    products.amount > 0 
    OR products.tracking = 'D'
  ) 
  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 
  AND products.company_id IN('1', '2', '3', '4', '5', '6') 
  AND products.product_type != 'D' 
GROUP BY 
  products.product_id 
ORDER BY 
  product asc, 
  products.product_id ASC 
LIMIT 
  0, 4

Query time 0.00175

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "6.10"
    },
    "ordering_operation": {
      "using_filesort": true,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": false,
        "nested_loop": [
          {
            "table": {
              "table_name": "cscart_categories",
              "access_type": "const",
              "possible_keys": [
                "PRIMARY",
                "c_status",
                "p_category_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
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              ],
              "key_length": "3",
              "ref": [
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 1,
              "filtered": "100.00",
              "cost_info": {
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                "eval_cost": "0.20",
                "prefix_cost": "0.00",
                "data_read_per_join": "2K"
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              ]
            }
          },
          {
            "table": {
              "table_name": "products_categories",
              "access_type": "range",
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              ],
              "key": "PRIMARY",
              "used_key_parts": [
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                "product_id"
              ],
              "key_length": "6",
              "rows_examined_per_scan": 3,
              "rows_produced_per_join": 3,
              "filtered": "100.00",
              "using_index": true,
              "cost_info": {
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                "prefix_cost": "1.65",
                "data_read_per_join": "48"
              },
              "used_columns": [
                "product_id",
                "category_id"
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              "attached_condition": "((`atulecarter_atul_demo1`.`products_categories`.`category_id` = 221) and (`atulecarter_atul_demo1`.`products_categories`.`product_id` <> 46))"
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "status",
                "idx_parent_product_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
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              "key_length": "3",
              "ref": [
                "atulecarter_atul_demo1.products_categories.product_id"
              ],
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              "rows_produced_per_join": 0,
              "filtered": "17.03",
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                "data_read_per_join": "2K"
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                "amount",
                "usergroup_ids",
                "tracking",
                "parent_product_id"
              ],
              "attached_condition": "((`atulecarter_atul_demo1`.`products`.`parent_product_id` = 0) and ((`atulecarter_atul_demo1`.`products`.`amount` > 0) or (`atulecarter_atul_demo1`.`products`.`tracking` = 'D')) and ((`atulecarter_atul_demo1`.`products`.`usergroup_ids` = '') or find_in_set(0,`atulecarter_atul_demo1`.`products`.`usergroup_ids`) or find_in_set(1,`atulecarter_atul_demo1`.`products`.`usergroup_ids`)) and (`atulecarter_atul_demo1`.`products`.`status` = 'A') and (`atulecarter_atul_demo1`.`products`.`company_id` in ('1','2','3','4','5','6')) and (`atulecarter_atul_demo1`.`products`.`product_type` <> 'D'))"
            }
          },
          {
            "table": {
              "table_name": "companies",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "company_id"
              ],
              "key_length": "4",
              "ref": [
                "atulecarter_atul_demo1.products.company_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "16.67",
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                "eval_cost": "0.02",
                "prefix_cost": "5.87",
                "data_read_per_join": "613"
              },
              "used_columns": [
                "company_id",
                "status",
                "company"
              ],
              "attached_condition": "(`atulecarter_atul_demo1`.`companies`.`status` = 'A')"
            }
          },
          {
            "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_demo1.products_categories.product_id"
              ],
              "rows_examined_per_scan": 3,
              "rows_produced_per_join": 0,
              "filtered": "29.30",
              "using_index": true,
              "cost_info": {
                "read_cost": "0.09",
                "eval_cost": "0.01",
                "prefix_cost": "6.01",
                "data_read_per_join": "1"
              },
              "used_columns": [
                "product_id",
                "lower_limit",
                "usergroup_id"
              ],
              "attached_condition": "((`atulecarter_atul_demo1`.`prices`.`lower_limit` = 1) and (`atulecarter_atul_demo1`.`prices`.`usergroup_id` in (0,0,1)))"
            }
          },
          {
            "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_demo1.products_categories.product_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.07",
                "eval_cost": "0.01",
                "prefix_cost": "6.10",
                "data_read_per_join": "349"
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              "used_columns": [
                "product_id",
                "lang_code",
                "product",
                "full_description"
              ]
            }
          }
        ]
      }
    }
  }
}

Result

product_id	product	company_name	product_type	parent_product_id	full_description
45	The Process of Research in Psychology	CS-Cart	P	0	<p><strong style="color: #000000; font-family: Arial, Verdana, 'Sans Serif'; line-height: 15px; text-align: justify;">A student friendly, thoughtfully organized introduction to research in psychology </strong><br style="color: #000000; font-family: Arial, Verdana, 'Sans Serif'; line-height: 15px; text-align: justify;" /><br style="color: #000000; font-family: Arial, Verdana, 'Sans Serif'; line-height: 15px; text-align: justify;" /><span style="color: #000000; font-family: Arial, Verdana, 'Sans Serif'; line-height: 15px; text-align: justify;">Employing numerous examples and the pedagogical approach of spaced repetition, this introductory text provides a step-by-step explanation of how to design, conduct, and present a research study in psychology. Chronologically organized and chock-full of pedagogy, this book creates logical scaffolding upon which students can build their knowledge.</span><br style="color: #000000; font-family: Arial, Verdana, 'Sans Serif'; line-height: 15px; text-align: justify;" /></p>
44	U.S. History and Government, Second Edition	CS-Cart	P	0	<p> <p style="color: #333333; font-family: Verdana, Geneva, sans-serif; font-size: 14px; line-height: 17px;"><span style="color: #996633; font-family: Georgia, 'Times New Roman', Times, serif; font-size: x-small;"><strong>Purpose:</strong></span></p> <p style="color: #333333; font-family: Verdana, Geneva, sans-serif; font-size: 14px; line-height: 17px;"><span style="color: #996633; font-family: Georgia, 'Times New Roman', Times, serif; font-size: x-small;">To provide students taking the 11th-grade New York State course in U.S. history and government and the Regents examination, as well as others taking a similar course, with a concise and comprehensive text. <br /></span></p> <ul style="color: #333333; font-family: Verdana, Geneva, sans-serif; font-size: 14px; line-height: 17px;" type="square"> <span style="color: #996633; font-family: Georgia, 'Times New Roman', Times, serif; font-size: x-small;"><strong>Text features include:</strong> <li>introduction to U.S. geography with an emphasis on how geography has shaped the American experience</li> <li>summary of the founding, principles, and operations of the U.S. government . lucid historical narrative</li> <li>emphasis on the modern period</li> <li>primary source readings in every chapter</li> <li>emphasis on the experiences and contributions of women and minorities</li> <li>mid-chapter “in Review” features</li> <li>end-of-chapter exercises: multiple-choice, thematic-essay, and document-based questions</li> <li>more maps, charts, and tables</li> <li>expanded coverage of U.S. Supreme Court landmark cases</li> <li>“The American People: Changes at the Millennium” - a demographic feature in the last chapter</li> <li>appendix: annotated Declaration of Independence and U.S. Constitution.</li> <li>Teacher’s Manual With Answers has guidelines for class presentation of each chapter, answer key, Student’s Study Guide.</li> <li>Hardbound</li> </span> </ul> </p>