code: public Instant getCreatedTimeFromToken(String token) {
          try {
              final Claims claims = getClaimsFromToken(token);
              return Instant.ofEpochMilli((Long) claims.get(CLAIM_KEY_CREATED));
          } catch (Exception e) {
              log.error("get created Time from jwt token error : {}", e.getMessage());
              return null;
          }
      }
docs: 重token中获取token创建时间
  
  @param token 当前token
  @return token创建时间