Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d1c868321bfcf37e066a7672b7dde5e0673a22a65de96306339c774f50c0110' 
  AND token = 'mU0T3C8hUhdaShS7WNg3ajRQPyQCFbMFaLhqVhfbf6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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