UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '56a659B3UNpvfiXiET5mWg1H7G+1hoVin/38yh9yPW0=' 
WHERE 
  key_id = '7821839617c4f7f9bf7e57527fd506873d865530dafb61747e87d63abc4cae54' 
  AND (
    token = '56a659B3UNpvfiXiET5mWg1H7G+1hoVin/38yh9yPW0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )