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 (
    51033, 51042, 51030, 51032, 51037, 51064, 
    51070, 51426, 51038, 51050, 51052, 
    51059, 51065, 51066, 51023, 51055
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 1

Query time 0.00021

JSON explain

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