UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'S/6ocXxrq0EAZrE5HYTVI7hpgweGhWM7ukCngXWDMoQ=' 
WHERE 
  key_id = '50835a6887252efd7fe6e4d32810d6b01d3a936728237464e67028bc986762e7' 
  AND (
    token = 'S/6ocXxrq0EAZrE5HYTVI7hpgweGhWM7ukCngXWDMoQ=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )