SELECT 
  SQL_CALC_FOUND_ROWS products.product_id, 
  products.amount, 
  descr1.product as product, 
  companies.company as company_name, 
  variation_group_products.group_id AS variation_group_id, 
  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_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) 
  INNER JOIN cscart_product_variation_group_products AS variation_group_products ON variation_group_products.product_id = products.product_id 
WHERE 
  1 
  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 variation_group_products.group_id IN (16, 10, 11) 
  AND products.company_id IN('1', '2', '3', '4', '5', '6') 
  AND products.product_type != 'D' 
GROUP BY 
  products.product_id 
ORDER BY 
  NULL asc

Query time 0.00171

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "44.55"
    },
    "ordering_operation": {
      "using_filesort": false,
      "grouping_operation": {
        "using_temporary_table": true,
        "using_filesort": false,
        "nested_loop": [
          {
            "table": {
              "table_name": "companies",
              "access_type": "ALL",
              "possible_keys": [
                "PRIMARY"
              ],
              "rows_examined_per_scan": 6,
              "rows_produced_per_join": 1,
              "filtered": "16.67",
              "cost_info": {
                "read_cost": "3.27",
                "eval_cost": "0.20",
                "prefix_cost": "3.47",
                "data_read_per_join": "7K"
              },
              "used_columns": [
                "company_id",
                "status",
                "company"
              ],
              "attached_condition": "((`atulecarter_atul_demo1`.`companies`.`status` = 'A') and (`atulecarter_atul_demo1`.`companies`.`company_id` in ('1','2','3','4','5','6')))"
            }
          },
          {
            "table": {
              "table_name": "variation_group_products",
              "access_type": "index",
              "possible_keys": [
                "PRIMARY",
                "idx_group_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id",
                "group_id"
              ],
              "key_length": "6",
              "rows_examined_per_scan": 49,
              "rows_produced_per_join": 12,
              "filtered": "24.49",
              "using_index": true,
              "using_join_buffer": "Block Nested Loop",
              "cost_info": {
                "read_cost": "9.55",
                "eval_cost": "2.40",
                "prefix_cost": "15.42",
                "data_read_per_join": "192"
              },
              "used_columns": [
                "product_id",
                "group_id"
              ],
              "attached_condition": "(`atulecarter_atul_demo1`.`variation_group_products`.`group_id` in (16,10,11))"
            }
          },
          {
            "table": {
              "table_name": "products",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "status"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "atulecarter_atul_demo1.variation_group_products.product_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "5.00",
              "cost_info": {
                "read_cost": "12.00",
                "eval_cost": "0.12",
                "prefix_cost": "29.82",
                "data_read_per_join": "2K"
              },
              "used_columns": [
                "product_id",
                "product_type",
                "status",
                "company_id",
                "amount",
                "usergroup_ids",
                "parent_product_id"
              ],
              "attached_condition": "((`atulecarter_atul_demo1`.`products`.`company_id` = `atulecarter_atul_demo1`.`companies`.`company_id`) 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`.`product_type` <> 'D'))"
            }
          },
          {
            "table": {
              "table_name": "products_categories",
              "access_type": "ref",
              "possible_keys": [
                "PRIMARY",
                "pt"
              ],
              "key": "pt",
              "used_key_parts": [
                "product_id"
              ],
              "key_length": "3",
              "ref": [
                "atulecarter_atul_demo1.variation_group_products.product_id"
              ],
              "rows_examined_per_scan": 11,
              "rows_produced_per_join": 6,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "5.40",
                "eval_cost": "1.32",
                "prefix_cost": "36.54",
                "data_read_per_join": "105"
              },
              "used_columns": [
                "product_id",
                "category_id"
              ]
            }
          },
          {
            "table": {
              "table_name": "cscart_categories",
              "access_type": "eq_ref",
              "possible_keys": [
                "PRIMARY",
                "c_status",
                "p_category_id"
              ],
              "key": "PRIMARY",
              "used_key_parts": [
                "category_id"
              ],
              "key_length": "3",
              "ref": [
                "atulecarter_atul_demo1.products_categories.category_id"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "5.00",
              "cost_info": {
                "read_cost": "6.60",
                "eval_cost": "0.07",
                "prefix_cost": "44.46",
                "data_read_per_join": "881"
              },
              "used_columns": [
                "category_id",
                "storefront_id",
                "usergroup_ids",
                "status"
              ],
              "attached_condition": "(((`atulecarter_atul_demo1`.`cscart_categories`.`usergroup_ids` = '') or find_in_set(0,`atulecarter_atul_demo1`.`cscart_categories`.`usergroup_ids`) or find_in_set(1,`atulecarter_atul_demo1`.`cscart_categories`.`usergroup_ids`)) and (`atulecarter_atul_demo1`.`cscart_categories`.`status` in ('A','H')) and (`atulecarter_atul_demo1`.`cscart_categories`.`storefront_id` in (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.variation_group_products.product_id",
                "const"
              ],
              "rows_examined_per_scan": 1,
              "rows_produced_per_join": 0,
              "filtered": "100.00",
              "cost_info": {
                "read_cost": "0.03",
                "eval_cost": "0.07",
                "prefix_cost": "44.55",
                "data_read_per_join": "1K"
              },
              "used_columns": [
                "product_id",
                "lang_code",
                "product",
                "full_description"
              ]
            }
          }
        ]
      }
    }
  }
}

Result

product_id amount product company_name variation_group_id product_type parent_product_id full_description
12 10 100g Pants CS-Cart 16 P 0 <p> When coach calls you off the bench, you need warm-up pants that come off in three seconds or less. That’s why these men's adidas 100g basketball pants have tear-away snaps down the sides, so you're ready for action as fast as a superhero. </p>
278 90 T-shirt, Color: White CS-Cart 10 P 0
279 90 T-shirt, Color: White CS-Cart 10 V 278
280 90 T-shirt, Color: Black CS-Cart 10 P 0
281 0 T-shirt, Color: Black CS-Cart 10 V 280
282 90 T-shirt, Color: Blue CS-Cart 10 P 0
283 0 T-shirt, Color: Blue CS-Cart 10 V 282
284 0 T-shirt, Color: Blue CS-Cart 10 V 282
287 20 Trefoil Hoodie CS-Cart 11 P 0 <p>The adidas Originals Trefoil Hoodie has been a streetwear essential for decades, with its characteristic big hood, kangaroo pocket and large Trefoil. Now it's your turn to join the Trefoil men's hoodie crew and carry the legend forward.</p>
324 10 100g Pants CS-Cart 16 V 12 <p> When coach calls you off the bench, you need warm-up pants that come off in three seconds or less. That’s why these men's adidas 100g basketball pants have tear-away snaps down the sides, so you're ready for action as fast as a superhero. </p>
325 10 100g Pants CS-Cart 16 P 0 <p> When coach calls you off the bench, you need warm-up pants that come off in three seconds or less. That’s why these men's adidas 100g basketball pants have tear-away snaps down the sides, so you're ready for action as fast as a superhero. </p>
326 10 100g Pants CS-Cart 16 V 325 <p> When coach calls you off the bench, you need warm-up pants that come off in three seconds or less. That’s why these men's adidas 100g basketball pants have tear-away snaps down the sides, so you're ready for action as fast as a superhero. </p>