UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'PmD55w09gtwWKaanvQd1SWbmGP2dXFEXjCpBk5JKDUM=' 
WHERE 
  key_id = '81ea669b0372f8d5c346ba56afaa58513c85e91e72a4870097fa8b8d0482a1c1' 
  AND (
    token = 'PmD55w09gtwWKaanvQd1SWbmGP2dXFEXjCpBk5JKDUM=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )