UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = '810cyMchzgg5pHvBE+V5tRwbSm0t1GTD7vVduxl+IfI=' 
WHERE 
  key_id = 'b6dab6e81f379339ffe75dbc3ef92765952147916c064eee3dcdc99342fceaf7' 
  AND (
    token = '810cyMchzgg5pHvBE+V5tRwbSm0t1GTD7vVduxl+IfI=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )