UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'SZAQBcw2KJrUSwfAIYHGjqJfcUWbFgqYllqndABny+g=' 
WHERE 
  key_id = '765f15be5c80c929360e9078bc43c71ff9d6e114d2e64b558561867c5f5278f3' 
  AND (
    token = 'SZAQBcw2KJrUSwfAIYHGjqJfcUWbFgqYllqndABny+g=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )