Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc9c029d90794fe665bcae84bd61f3bbdc1f01d65a7cf5c68a2d77d0d0196d5f' 
  AND token = 'WafM4LxUeuoL5Pje+1wO7H8cF60tsW40/TjocuDTuZg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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