Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b34dca8525437b65cef860f5b2a3124e7a15b5867d44f174236110db2507734' 
  AND token = 'w8z5L1ozJmQVbhC7sN1dl6PIPzYG1G9vATQKNjLbyT8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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