If you’re going to have border radius, you can add an actual border to the box and it will appear without the shadow. like this:
.tokenneed {
width: 30vw;
height: 5vh;
border-radius: 5px;
border: 2px solid black;
box-shadow: none;
outline: none;
}
<input class = "tokenneed" placeholder = "토큰을 입력해주세요" type = "text">