UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'r2qmuEZuJW1ucGB8UwtNXjjsLczNPkTRXELWRKMgUGc=' 
WHERE 
  key_id = '8cea71b366cb44f1003e0247887d708439d74b044d4e36819851472c434a1e30' 
  AND (
    token = 'r2qmuEZuJW1ucGB8UwtNXjjsLczNPkTRXELWRKMgUGc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )