SELECT 
  cscart_products.product_id, 
  cscart_products.product_code, 
  cscart_products.status, 
  cscart_products.company_id, 
  cscart_products.list_price, 
  cscart_products.shipping_params, 
  cscart_product_review_prepared_data.average_rating, 
  cscart_product_descriptions.product, 
  cscart_product_descriptions.short_description, 
  cscart_product_descriptions.full_description, 
  cscart_product_descriptions.promo_text, 
  IFNULL(
    avg(opr.rating_value), 
    3
  ) as actual_rating, 
  cd.category, 
  cd.category_id, 
  cc.category_id as main_category, 
  pvd.variant_id, 
  pvd.variant, 
  MIN(
    IF(
      cscart_product_prices.percentage_discount = 0, 
      cscart_product_prices.price, 
      cscart_product_prices.price - (
        cscart_product_prices.price * cscart_product_prices.percentage_discount
      )/ 100
    )
  ) as price 
FROM 
  cscart_products 
  LEFT JOIN cscart_product_prices ON cscart_product_prices.product_id = cscart_products.product_id 
  AND cscart_product_prices.lower_limit = 1 
  AND cscart_product_prices.usergroup_id IN (0) 
  LEFT JOIN cscart_product_descriptions ON cscart_product_descriptions.product_id = cscart_products.product_id 
  LEFT JOIN cscart_product_review_prepared_data ON cscart_product_review_prepared_data.product_id = cscart_products.product_id 
  left join cscart_product_reviews opr on opr.product_id = cscart_products.product_id 
  and opr.status = "A" 
  left join cscart_product_features_values pfv on pfv.product_id = cscart_products.product_id 
  AND pfv.feature_id = 62 
  left join cscart_product_feature_variant_descriptions pvd on pvd.variant_id = pfv.variant_id 
  inner join cscart_products_categories pc on pc.product_id = cscart_products.product_id 
  inner join cscart_categories cc on cc.category_id = pc.category_id 
  and pc.link_type = "M" 
  inner join cscart_category_descriptions cd on cd.category_id = cc.parent_id 
  AND cscart_product_descriptions.lang_code = 'en' 
WHERE 
  cscart_products.product_id = 36193

Query time 0.00078

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "7.84"
    },
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "const",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "ref": [
            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "0.00",
            "eval_cost": "0.10",
            "prefix_cost": "0.00",
            "data_read_per_join": "5K"
          },
          "used_columns": [
            "product_id",
            "product_code",
            "status",
            "company_id",
            "list_price",
            "shipping_params"
          ]
        }
      },
      {
        "table": {
          "table_name": "cscart_product_prices",
          "access_type": "const",
          "possible_keys": [
            "usergroup",
            "product_id",
            "lower_limit",
            "usergroup_id",
            "idx_product_prices_usergroup_limit"
          ],
          "key": "usergroup",
          "used_key_parts": [
            "product_id",
            "usergroup_id",
            "lower_limit"
          ],
          "key_length": "9",
          "ref": [
            "const",
            "const",
            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
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            "eval_cost": "0.10",
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            "data_read_per_join": "24"
          },
          "used_columns": [
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            "price",
            "percentage_discount",
            "lower_limit",
            "usergroup_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "cscart_product_descriptions",
          "access_type": "const",
          "possible_keys": [
            "PRIMARY",
            "product_id"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "product_id",
            "lang_code"
          ],
          "key_length": "9",
          "ref": [
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            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
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          },
          "used_columns": [
            "product_id",
            "lang_code",
            "product",
            "short_description",
            "full_description",
            "promo_text"
          ]
        }
      },
      {
        "table": {
          "table_name": "cscart_product_review_prepared_data",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "ref": [
            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "0.25",
            "eval_cost": "0.10",
            "prefix_cost": "0.35",
            "data_read_per_join": "16"
          },
          "used_columns": [
            "product_id",
            "average_rating"
          ]
        }
      },
      {
        "table": {
          "table_name": "opr",
          "access_type": "ref",
          "possible_keys": [
            "idx_product_id"
          ],
          "key": "idx_product_id",
          "used_key_parts": [
            "product_id"
          ],
          "key_length": "3",
          "ref": [
            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "0.25",
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            "prefix_cost": "0.70",
            "data_read_per_join": "1K"
          },
          "used_columns": [
            "product_id",
            "rating_value",
            "status"
          ],
          "attached_condition": "<if>(is_not_null_compl(opr), (`cscart_db`.`opr`.`status` = 'A'), true)"
        }
      },
      {
        "table": {
          "table_name": "pfv",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY",
            "product_id",
            "fpl",
            "idx_product_feature_variant_id",
            "fl"
          ],
          "key": "product_id",
          "used_key_parts": [
            "product_id",
            "feature_id"
          ],
          "key_length": "6",
          "ref": [
            "const",
            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "using_index": true,
          "cost_info": {
            "read_cost": "0.51",
            "eval_cost": "0.10",
            "prefix_cost": "1.31",
            "data_read_per_join": "40"
          },
          "used_columns": [
            "feature_id",
            "product_id",
            "variant_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "pc",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY",
            "link_type",
            "pt"
          ],
          "key": "pt",
          "used_key_parts": [
            "product_id",
            "link_type"
          ],
          "key_length": "6",
          "ref": [
            "const",
            "const"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "using_index": true,
          "cost_info": {
            "read_cost": "0.49",
            "eval_cost": "0.10",
            "prefix_cost": "1.89",
            "data_read_per_join": "16"
          },
          "used_columns": [
            "product_id",
            "category_id",
            "link_type"
          ]
        }
      },
      {
        "table": {
          "table_name": "cc",
          "access_type": "eq_ref",
          "possible_keys": [
            "PRIMARY",
            "parent",
            "p_category_id"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "category_id"
          ],
          "key_length": "3",
          "ref": [
            "cscart_db.pc.category_id"
          ],
          "rows_examined_per_scan": 1,
          "rows_produced_per_join": 1,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "0.25",
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            "prefix_cost": "2.24",
            "data_read_per_join": "2K"
          },
          "used_columns": [
            "category_id",
            "parent_id"
          ]
        }
      },
      {
        "table": {
          "table_name": "pvd",
          "access_type": "ref",
          "possible_keys": [
            "PRIMARY"
          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "variant_id"
          ],
          "key_length": "3",
          "ref": [
            "cscart_db.pfv.variant_id"
          ],
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          "used_columns": [
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            "variant"
          ]
        }
      },
      {
        "table": {
          "table_name": "cd",
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          ],
          "key": "PRIMARY",
          "used_key_parts": [
            "category_id"
          ],
          "key_length": "3",
          "ref": [
            "cscart_db.cc.parent_id"
          ],
          "rows_examined_per_scan": 15,
          "rows_produced_per_join": 15,
          "filtered": "100.00",
          "cost_info": {
            "read_cost": "3.75",
            "eval_cost": "1.50",
            "prefix_cost": "7.84",
            "data_read_per_join": "45K"
          },
          "used_columns": [
            "category_id",
            "category"
          ]
        }
      }
    ]
  }
}

Result

product_id product_code status company_id list_price shipping_params average_rating product short_description full_description promo_text actual_rating category category_id main_category variant_id variant price
36193 CR025~old D 13 850.00 a:5:{s:16:"min_items_in_box";i:0;s:16:"max_items_in_box";i:0;s:10:"box_length";i:0;s:9:"box_width";i:0;s:10:"box_height";i:0;} Special Offer -Low pH Good Morning Gel Cleanser - 150ml Removes skin impurities <p>The Good Morning Gel Cleanser is a mildly acidic cleanser with a pH level (5.30~6.30) closest to your skin's natural pH levels. Its slightly acid pH helps clean your skin without stripping it of its natural oils and restores the skin to its optimal pH. A mild yet effective cleanser, it leaves the skin feeling soft and moisturised after use. Formulated with tea tree oil and natural BHA, the Good Morning Gel Cleanser controls excess sebum production, removes dead skin cells and clears pores and minimizes their appearance. Enriched with botanical ingredients it ensures that your skin remains purified. Its gentle formula allows you to use the cleanser day and night to help your skin stay supple and clear. Its transparent gel texture lathers into a fine foam that removes any impurities, and can even be used as a body wash.</p> 3.0000 Cleansers 2686 2819 10451 COSRX 510.000000