SELECT 
  cscart_products.*, 
  cscart_products.ebay_status, 
  cscart_products.ebay_template_id 
FROM 
  cscart_products 
WHERE 
  cscart_products.product_id IN (
    10869, 10870, 10871, 10874, 10879, 10884, 
    10885, 10886, 10887, 10888, 10889, 
    10890, 10892, 10893, 10894, 10901
  )

Query time 0.00034

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 (10869,10870,10871,10874,10879,10884,10885,10886,10887,10888,10889,10890,10892,10893,10894,10901)"
    }
  }
}