SELECT 
  cscart_products.*, 
  cscart_products.ebay_status, 
  cscart_products.ebay_template_id 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    23583, 23584, 23585, 23586, 23587, 23588, 
    23589, 23590, 23591, 23592, 23593, 
    23594, 23595, 23596, 23597, 23598
  )

Query time 0.00050

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": 16,
      "filtered": 100,
      "index_condition": "cscart_products.product_id in (23583,23584,23585,23586,23587,23588,23589,23590,23591,23592,23593,23594,23595,23596,23597,23598)"
    }
  }
}