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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 (
    1632, 1633, 1634, 1635, 1636, 1637, 1638, 
    1639, 1640, 1641, 1642, 1643, 1644, 
    1645, 1646, 1647, 1648, 1649, 1650, 
    1651, 1652, 5326, 5327, 5328
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00036

JSON explain

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