SELECT 
  cscart_product_review_prepared_data.product_id AS product_id, 
  cscart_product_review_prepared_data.average_rating AS average_rating, 
  cscart_product_review_prepared_data.reviews_count AS reviews_count 
FROM 
  cscart_product_review_prepared_data 
WHERE 
  cscart_product_review_prepared_data.product_id IN (
    6748, 3226, 3218, 6754, 6745, 6752, 6712, 
    6738, 6703, 5032, 3346, 3342, 3345, 
    3341, 5035, 3340, 3344, 3339, 3347, 
    5936, 5378, 3338, 6290, 8813, 6741, 
    5028, 5030, 6739, 5029, 5194, 5957, 
    5040, 5036, 5461, 10221, 6702, 5034, 
    6753, 5042, 8784
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "1.00"
    },
    "table": {
      "table_name": "cscart_product_review_prepared_data",
      "access_type": "ALL",
      "possible_keys": [
        "PRIMARY"
      ],
      "rows_examined_per_scan": 5,
      "rows_produced_per_join": 5,
      "filtered": "100.00",
      "cost_info": {
        "read_cost": "0.50",
        "eval_cost": "0.50",
        "prefix_cost": "1.00",
        "data_read_per_join": "80"
      },
      "used_columns": [
        "product_id",
        "storefront_id",
        "average_rating",
        "reviews_count"
      ],
      "attached_condition": "((`softwarepirmam_hewadelivard_cscart_4`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`softwarepirmam_hewadelivard_cscart_4`.`cscart_product_review_prepared_data`.`product_id` in (6748,3226,3218,6754,6745,6752,6712,6738,6703,5032,3346,3342,3345,3341,5035,3340,3344,3339,3347,5936,5378,3338,6290,8813,6741,5028,5030,6739,5029,5194,5957,5040,5036,5461,10221,6702,5034,6753,5042,8784)))"
    }
  }
}