UPDATE 
  cscart_multi_declock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'zUMOVm4ZCEzEPcofA7TKH2yfejDIRHBofsnxm3nHk9E=' 
WHERE 
  key_id = '9f51af1c4e88472c9e647125e00bb42f9a773c97e1b42a1b2eb1823ec988ed04' 
  AND (
    token = 'zUMOVm4ZCEzEPcofA7TKH2yfejDIRHBofsnxm3nHk9E=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )