diff --git a/src/main/kotlin/roomescape/auth/infrastructure/jwt/JwtHandler.kt b/src/main/kotlin/roomescape/auth/infrastructure/jwt/JwtHandler.kt
index 649fe125..feaabcda 100644
--- a/src/main/kotlin/roomescape/auth/infrastructure/jwt/JwtHandler.kt
+++ b/src/main/kotlin/roomescape/auth/infrastructure/jwt/JwtHandler.kt
@@ -13,15 +13,15 @@ class JwtHandler(
         @Value("\${security.jwt.token.secret-key}")
         private val secretKey: String,
 
-        @Value("\${security.jwt.token.access.expire-length}")
-        private val accessTokenExpireTime: Long
+        @Value("\${security.jwt.token.ttl-seconds}")
+        private val tokenTtlSeconds: Long
 ) {
     fun createToken(memberId: Long): String {
         val date = Date()
-        val accessTokenExpiredAt = Date(date.time + accessTokenExpireTime)
+        val accessTokenExpiredAt = Date(date.time + tokenTtlSeconds)
 
         return Jwts.builder()
-                .claim("memberId", memberId)
+                .claim(MEMBER_ID_CLAIM_KEY, memberId)
                 .setIssuedAt(date)
                 .setExpiration(accessTokenExpiredAt)
                 .signWith(SignatureAlgorithm.HS256, secretKey.toByteArray())
@@ -33,8 +33,8 @@ class JwtHandler(
             return Jwts.parser()
                     .setSigningKey(secretKey.toByteArray())
                     .parseClaimsJws(token)
-                    .getBody()
-                    .get("memberId", Number::class.java)
+                    .body
+                    .get(MEMBER_ID_CLAIM_KEY, Number::class.java)
                     .toLong()
         } catch (e: Exception) {
             when (e) {
@@ -47,4 +47,8 @@ class JwtHandler(
             }
         }
     }
+
+    companion object {
+        private const val MEMBER_ID_CLAIM_KEY = "memberId"
+    }
 }
diff --git a/src/main/resources/application.yaml b/src/main/resources/application.yaml
index 82422963..378e93fd 100644
--- a/src/main/resources/application.yaml
+++ b/src/main/resources/application.yaml
@@ -21,8 +21,7 @@ security:
   jwt:
     token:
       secret-key: daijawligagaf@LIJ$@U)9nagnalkkgalijaddljfi
-      access:
-        expire-length: 1800000 # 30 분
+      ttl-seconds: 1800000
 
 payment:
   api-base-url: https://api.tosspayments.com
diff --git a/src/test/resources/application.yaml b/src/test/resources/application.yaml
index 9bc65da2..e2a6e144 100644
--- a/src/test/resources/application.yaml
+++ b/src/test/resources/application.yaml
@@ -14,8 +14,7 @@ security:
   jwt:
     token:
       secret-key: daijawligagaf@LIJ$@U)9nagnalkkgalijaddljfi
-      access:
-        expire-length: 1800000 # 30 분
+      ttl-seconds: 1800000
 
 payment:
   api-base-url: https://api.tosspayments.com