UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'MD5tJ9DVS2pHZl5O0IqRKI9hHE8QEqjadrRktzsgbUE=' 
WHERE 
  key_id = 'b8e249058968e05192914aa0ed0ab370f138a660704549373331c0913c0cef48' 
  AND (
    token = 'MD5tJ9DVS2pHZl5O0IqRKI9hHE8QEqjadrRktzsgbUE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )