Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '32743dd814fdea36a0decbb4ad248fc7e75706180ae6fdf8e4ee5b88644e8223' 
  AND token = '03jbU74qKzP1TKf0U8I1ixJlP9R/nZPdbU/FXIvf7vc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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