How to filter the data based on the headers key in the KTable?

Question

I've set a few custom keys in the Kafka headers

timeStamp:<current date>
myKey1:1

This is my KTABLE

    KTable<String, String> table1=streamsBuilder.table("MYTOPIC");

I need to filter this table based on the header's key timeStamp. How to achieve this, since KTable<String,String>, the key is only the kafka message key. How to filter the records based on the header keys.