Create DbQuery From lazy loading models

Is it possile to create a DbQuery from model with lazy-loaded navigation properties? When I tried to do so, I got the following error

getting value from 'Prefix' on 'Castle.Proxies.ExtendedStudentProxy --> Unable to track an instance of type 'ExtendedStudent' because it is a query type, Only entity types may be tracked.

I thought that DbQuery are read only so aren't they supposed to not be tracked as a default behavior? Am I wrong?

This this a sample of the code I used:

models:

public class ExtendedStudent {
    public string FirsName {get; set;}
    public virtual Prefix Prefix {get; set;}
}

public class Prefix {
    public int Id {get; set;}
    public string Name {get; set;}
}

Startup.cs

   builder.AddDbContext<ApplicationDbContext>( b => b.UseLazyLoadingProxies()
       .UseSqlServer(connectionString));

ApplicationDbContext.cs

public class ApplicationDbContext {

    ...
    public DbSet<Proxy> Proxies {get; set;}
    public DbQuery<ExtendedStudent> ExtendedStudents {get; set;}
    ...
}