Unable to search special character

GET logs*/_search
{
    "query": {
        "match_phrase": {
           "message": "2=2"
        }
    }
}

Result :

"message": "2019-10-10 09:28:59.301644 xxx.xxx.xxx.xxx switchapp event=process_started process_name=kworker/2:2 pid=23026"

I am not able to get exact result.