UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'Ln5c4IZsrDlnKovWqvLwhpKLGTgzexjMreg2DPgiWMg=' 
WHERE 
  key_id = '839cf99639559f980b95184a9640cb5c1ac31b84b5c56f23e2beef8fbeff1447' 
  AND (
    token = 'Ln5c4IZsrDlnKovWqvLwhpKLGTgzexjMreg2DPgiWMg=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )