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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 (
    323, 3961, 3962, 3963, 3964, 3965, 3966, 
    3967, 4006, 4007, 4008, 4009, 4010, 
    4011, 4012, 4066, 4067, 4068, 4069, 
    4070, 4071, 4072, 4073, 4074
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00021

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "Impossible WHERE noticed after reading const tables"
  }
}