Query Elasticsearch without timerange

Hi there,

How do I use Grafana to query data from ElasticSearch without specifying the time range? i.e. I want to see the last N results that were added to ElasticSearch (based on receipt time).

Is this possible? If not, are there any workarounds?

I am dealing with some data that has somewhat invalid/incorrect timestamps, they are close to 0, which would imply 1970ish. This occurs because the data is generated the data source does not have a reliable time source yet.