UPDATE 
  cscart_lock_keys 
SET 
  expiry_at = UNIX_TIMESTAMP(NOW()) + 30, 
  token = 'ZTSX3Eyw5ss16s01tNuLb5m2HBNJxo4/mQp/yX/dquc=' 
WHERE 
  key_id = '50897040ca19c3c1c4515679c72cfde4d484404972f9469984b7cfdcaa4c0a2f' 
  AND (
    token = 'ZTSX3Eyw5ss16s01tNuLb5m2HBNJxo4/mQp/yX/dquc=' 
    OR expiry_at <= UNIX_TIMESTAMP(NOW())
  )