Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a174e8fc64371fa8f8d42b0d3bb7ec30d50749d028a232a65f3803aecbef790' 
  AND token = 'n4xfr0wQtNlZBAJY3Vcq0XDrMPBMcUIJkH6hlyEasmw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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