UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '4651l8UxljEFmJ3GyITlaNyvXLMEGbR8VRzFhCbQwoI=' 
WHERE 
  key_id = '90ae9284fb9916525f8069b72b5007aa6517419d1454b7d533227b709f91c964' 
  AND (
    token = '4651l8UxljEFmJ3GyITlaNyvXLMEGbR8VRzFhCbQwoI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )