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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 (
    3456, 3449, 3461, 3441, 3444, 3471, 3442, 
    3480, 3448, 3440, 3467, 3468, 3435, 
    3476, 3447, 3439, 3465, 3446, 3460, 
    3443, 3469, 3464, 3459, 6950
  ) 
  AND cscart_product_review_prepared_data.storefront_id = 0

Query time 0.00024

JSON explain

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