UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ZWn8VCDDssJz5lCQFiHiqiR2ujkbzis9CPoRGlHebxA=' 
WHERE 
  key_id = '83a8f4d237fd799868672d1aed83a0db89c03f3db53aaf80555017b8c1e2538c' 
  AND (
    token = 'ZWn8VCDDssJz5lCQFiHiqiR2ujkbzis9CPoRGlHebxA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )