UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 300, 
  token = '6qklF6zM6n2djEgSuXl1xLDr0E/TDV759Rk/P8/bMe0=' 
WHERE 
  key_id = '51ca7a3716f31ca7e3174e25313d701ab00042f48922fdb702cdfd6767c27cd4' 
  AND (
    token = '6qklF6zM6n2djEgSuXl1xLDr0E/TDV759Rk/P8/bMe0=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )