SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    1414, 1453, 1452, 1407, 1432, 1451, 1445, 
    1411, 1449, 1406, 1448, 1447
  )

Query time 0.00096

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "table_name": "cscart_products",
      "access_type": "range",
      "possible_keys": ["PRIMARY"],
      "key": "PRIMARY",
      "key_length": "3",
      "used_key_parts": ["product_id"],
      "rows": 12,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (1414,1453,1452,1407,1432,1451,1445,1411,1449,1406,1448,1447)"
    }
  }
}