Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '8a77e32399e80c8d60d9a997ed67b255ab56e2ba8ff081ce92c2ed2941bbe190' 
  AND token = 'vn9o3jCuIVFaltywQ4z/zLSbbFsIdHBuvZt7/3rUu9o=' 
  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"
    }
  }
}