UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '/sM1rVbG/ST5JoNBOw6YvvOeYBaNs0qyxuo233icrPY=' 
WHERE 
  key_id = '97b657779e6356da430d27167475feee8baa394c781ff30258baa8e36c0a9104' 
  AND (
    token = '/sM1rVbG/ST5JoNBOw6YvvOeYBaNs0qyxuo233icrPY=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )