Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '91d34d7e5a19b0617c5fae960070e392e7cfa70052d799561d1860a1201bcb9b' 
  AND token = 'zNHiJQD13GIAnV80dMb7orWAm3TtcIiOrweuaoKuvkI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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