Yii2 ¿Cómo realizar la agrupación de condiciones AND u OR?

Puedes probar esto:

//SELECT * FROM users AS u WHERE u.user_id IN(1,5,8) AND (u.status = 1 OR u.verified = 1) OR (u.social_account = 1 AND u.enable_social = 1)
$model = arname()->find()
       ->andWhere(['user_id'=>[1,5,8]])
       ->andWhere(['or',
           ['status'=>1],
           ['verified'=>1]
       ])
       ->orWhere(['and',
           ['social_account'=>1],
           ['enable_social'=>1]
       ])
       ->all();