Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd65687944cc2b8f10b5d657eae6c3d01737d84a9defed5ffa70592b89159ead8' 
  AND token = 'A6ljB8ho3u7f1Dhn5O79/Mr62yLk6gA6vXIrU0sHI5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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