How to search in a specific elasticsearch indice?

not work

I only want to search a indice

fixed

{
    "query": {
        "bool": {
            "filter": [
                {
                    "term": {
                        "_index": "{{eventLogIndex}}"
                    }
                },
                {
                    "term": {
                        "eventId": "bd635a17-c219-4783-b346-9b7cd4c29824"
                    }
                }
            ]
        }
    }
}