SELECT 
  product_id, 
  amount 
FROM 
  cscart_warehouses_destination_products_amount 
WHERE 
  product_id IN (
    19359, 19367, 19532, 19469, 19499, 19521, 
    19500, 19487, 19522, 19446, 19372, 
    19482, 19467, 19481, 19509, 19510, 
    19511, 19479, 19444, 19518, 19498, 
    19436, 19425, 19426
  ) 
  AND destination_id = 115 
  AND storefront_id = 0

Query time 0.00046

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_warehouses_destination_products_amount",
      "access_type": "range",
      "possible_keys": ["PRIMARY", "idx_storefront_id"],
      "key": "PRIMARY",
      "key_length": "9",
      "used_key_parts": ["product_id", "destination_id", "storefront_id"],
      "rows": 24,
      "filtered": 75,
      "index_condition": "cscart_warehouses_destination_products_amount.destination_id = 115 and cscart_warehouses_destination_products_amount.storefront_id = 0 and cscart_warehouses_destination_products_amount.product_id in (19359,19367,19532,19469,19499,19521,19500,19487,19522,19446,19372,19482,19467,19481,19509,19510,19511,19479,19444,19518,19498,19436,19425,19426)"
    }
  }
}