SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    146859, 134715, 172228, 118730, 172379, 
    148114, 140993, 174343, 150665, 163766, 
    173969, 160326
  )

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost": 0.0216566,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "loops": 1,
          "rows": 12,
          "cost": 0.0216566,
          "filtered": 100,
          "attached_condition": "cscart_products.product_id in (146859,134715,172228,118730,172379,148114,140993,174343,150665,163766,173969,160326)"
        }
      }
    ]
  }
}