SELECT 
  cscart_products.* 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    46993, 21780, 47013, 1714, 5548, 460, 
    3587, 5549, 40434, 46737, 47010, 2964, 
    40440, 34053, 3586, 1713, 2514, 5569, 
    46751, 455, 48769, 5556, 16607, 4440, 
    35249, 27358, 18258, 46735, 5554, 2505, 
    4441, 33177
  )

Query time 0.00439

JSON explain

{
  "query_block": {
    "select_id": 1,
    "nested_loop": [
      {
        "table": {
          "table_name": "cscart_products",
          "access_type": "range",
          "possible_keys": ["PRIMARY"],
          "key": "PRIMARY",
          "key_length": "3",
          "used_key_parts": ["product_id"],
          "rows": 32,
          "filtered": 100,
          "index_condition": "cscart_products.product_id in (46993,21780,47013,1714,5548,460,3587,5549,40434,46737,47010,2964,40440,34053,3586,1713,2514,5569,46751,455,48769,5556,16607,4440,35249,27358,18258,46735,5554,2505,4441,33177)"
        }
      }
    ]
  }
}