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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'f72597eb0470f3655cd0b60f64177216613a53400a66a071e4f28a43c8a56247' 
  AND token = '6gL2tKGJG6Ztm50CfVVzD9dVSUJpTfW0wG7qQMrGR1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}