Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ad23477cac865de899625c298c21bcf100aaf66fb6660b7975b87d7d4894376b' 
  AND token = '3TKQUlONt14bK3we4216QHYG9TZ8UBS1vkUNFP9YdPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}