UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'hm/lOfWCWTbmDiUQM9KLKNF79IMHapnYuGD7qPoXRBs=' 
WHERE 
  key_id = '51e5df2df958c03c2def31f386260ddc3a36b57890ce50c734bac2b15ee7fab8' 
  AND (
    token = 'hm/lOfWCWTbmDiUQM9KLKNF79IMHapnYuGD7qPoXRBs=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )