Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ab22daa0aa8e34bfb3af3ff733de8d7e3678d5c8c448c27e9f2e084f065bf92a' 
  AND token = 'bMRhQ2SC4MUXuwSKWl9fxs+mJzemAvbLXnhoYPP6Qr0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

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