create javascript map with two keys

I would like to create a map in JavaScript with two keys or need to know if there is a better solution. I need to know if key1 is part of the collection and if so get data1 and in another case I need to know if a value of type key2 is part of the collection and get its data. How do you do this in JavaScript?

Example:

const contacts = new Map();
contacts.set('key_person',  {phone: "617-555-4321", address: "321 S 2nd St"});

const contacts2 = new Map();
contacts.set('key_city',  {phone: "617-555-4321", address: "321 S 2nd St"});

At the moment I have maps with redundant information in order to get data by key_person and key_city. I want a joint map where I can filter for both keys at a time. Thanks you