UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '6CrHcc19jFAj9fw9tNeYb07T+xvcuiBaD405gEwDVyE=' 
WHERE 
  key_id = '257642cd5649db811e97b2d05dfdd33b29751ee7dd57f1ce8cdaa73d761243bc' 
  AND (
    token = '6CrHcc19jFAj9fw9tNeYb07T+xvcuiBaD405gEwDVyE=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )