Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '0ae1a2f267c28920d0c9a587997b31b69e876a9e90c90577e4edb61e4febb9a5' 
  AND token = '+qhWW67qBCb1hnZuQW6bE1ZsDvR/f4jf03czVqCE5fc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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