Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdbc883a064314c1062a875f1b9db6c0f9dd855f199465c0532efbed340070f4' 
  AND token = 'wpO1BvQ4qw48d9y56j7MAWxrq+QWs3ga5Z6bPylZ2wM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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