Excluding/Including Records using "Record Select Expert"

I am excluding records from my report by using the following in the select record expert:

The above formula successfully excludes records from the report that have  expiration dates older than the current date.

How would I include records for the field {SorContractPrice.ExpiryDate} that have an expiry date of "None"?

The field "ExpiryDate" is  type "Date Time".

So in summary, I would like to exclude any records that have an expiry date older than the current date and include any records that have an expiry date of None.

Any help would be appreciated.

Thank You.