Sandbox

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 (
    4038, 4039, 4040, 4041, 4117, 4118, 4119, 
    4120, 4121, 4122, 4123, 4171, 4172, 
    4173, 4174, 4175, 4176, 50, 51, 52, 53, 
    54, 55, 56
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00029

JSON explain

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