Once you have created a Managed property made it searchable.

1. Run full crawl.
2. Create a managed property for the crawled property created for this property bag.Make the managed property searchable and retrievable.
3. Use it in query just like any other normal managed property.

for eg: Prop:Value

Once you have created a Managed property and made it searchable.

1. Run full crawl.
2. Create a managed property for the crawled property created for this property bag.Make the managed property searchable and retrievable.
3. Use it in query just like any other normal managed property.

for eg: Prop:Value