You may disable Scout search support for a specific resource by defining a usesScout method on the resource class. When Scout search support is disabled, simple database queries will be used to search against the given resource, even if the associated resource model includes the Scout Searchable trait:

namespace App\Nova;

class User extends Resource 
{
    /**
     * Determine if this resource uses Laravel Scout.
     *
     * @return bool
     */
    public static function usesScout()
    {
        return false;
    }
}

source