Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b46f6e271d7004a1e127b7be9c0134c9c0733f0a7eb0197c413336ad920c130' 
  AND token = 'xKABizf8G9muACI4K1DE3lZIvx+6YVE8GcUYCzaURQg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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