Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bae05c2b8718ed8ca865c53a03052fbbeb9eefe30105573230b9aa2d812d17eb' 
  AND token = '33rBJoXTUtmCbcdWnoDRdu3eoz1mbDb3viOKA8t4MQI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}