UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'a2n1Cm/65WaNnihIoWLFtiJzVLS0rgcVLnGe+e102MA=' 
WHERE 
  key_id = '53e260ce0ec3ebe9eb44d76be22ba1eb326dc43bb660eadaf90a33d813bed0ff' 
  AND (
    token = 'a2n1Cm/65WaNnihIoWLFtiJzVLS0rgcVLnGe+e102MA=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )