SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'b262df9fc4479734875eff8e21f76004b27ad49ea73d0ba0433774f46acc2df1' 
  AND token = 'GMLBwmj6VoasZBC45Zgb60aFDpI+HqszUyqLqNxWKTI=' 
  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"
    }
  }
}