2013 – Querying a large list with an indexed column does not work

I'm asking a big list and it works fine if I do not have any conditions in the where clause.

I'm trying to get larger objects than some ID(The real requirement is to obtain articles Created> today ()), as soon as I introduce this condition, the query fails with the error below:

Additional information: The attempted operation is prohibited because it exceeds the list display threshold imposed by the administrator.

ListItemCollectionPosition itemPosition = null;
while (true)
{
CamlQuery camlQuery = new CamlQuery ();
camlQuery.ListItemCollectionPosition = itemPosition;
camlQuery.ViewXml = ""+
""+
""+
""+
""+
"80000"+
""+
""+
""+
""+
""+
""+
""+
""+
""+
""+
""+
"100";
ListItemCollection collListItem = library.GetItems (camlQuery);
clientContext.Load (collListItem);
clientContext.ExecuteQuery ();
itemPosition = collListItem.ListItemCollectionPosition;

foreach (ListItem element in collListItem)
{

if (item.FileSystemObjectType.ToString () == "File")
{
}
}
if (itemPosition == null)
{
Pause;
}

According to my understanding, I can only use indexed columns to query a large list and ID is an indexed column so why does not it work?