SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '22aff94722113f7cb170642a8b15d2f8ad2ea16b6b6a2d20960c8ba75c4c70ee' 
  AND token = '2k33S0C5PlYmXgt+SCBciKI6rnEPww9gpUMlZZVccZA=' 
  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"
    }
  }
}