Return null in case token with negative num value is being read

web3/src/main/java/org/hiero/mirror/web3/state/keyvalue/TokenReadableKVState.java

@@ -72,6 +72,10 @@ protected TokenReadableKVState(
 
     @Override
     protected Token readFromDataSource(@Nonnull TokenID key) {
+        if (key.tokenNum() < 0) {
+            return null;
+        }
+
         final var timestamp = ContractCallContext.get().getTimestamp();
         final var entity = commonEntityAccessor.get(key, timestamp).orElse(null);
 

web3/src/test/java/org/hiero/mirror/web3/service/ContractCallAirdropSystemContractTest.java

@@ -4,6 +4,7 @@
 
 import static com.hedera.hapi.node.base.ResponseCodeEnum.CONTRACT_REVERT_EXECUTED;
 import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+import static org.assertj.core.api.AssertionsForClassTypes.assertThatThrownBy;
 import static org.hiero.mirror.common.domain.entity.EntityType.ACCOUNT;
 import static org.hiero.mirror.common.domain.entity.EntityType.CONTRACT;
 import static org.hiero.mirror.web3.evm.utils.EvmTokenUtils.toAddress;
@@ -108,6 +109,29 @@
         verifyContractCall(functionCall, contract);
     }
 
+    @Test
+    void airdropTokenWithInvalidTokenAddress() {
+        // Given
+        final var contract = testWeb3jService.deployWithValue(Airdrop::deploy, DEFAULT_DEPLOYED_CONTRACT_BALANCE);
+        final var sender = accountEntityPersist();
+        final var receiver = persistAirdropReceiver(EntityType.ACCOUNT, e -> {});
+
+        final var tokenId = fungibleTokenSetup(sender);
+        tokenAccountPersist(tokenId, receiver.getId());
+        final var invalidTokenAddress = "0xa7d9ddbe1f17865597fbd27ec712455208b6b76d";
+
+        // When
+        final var functionCall = contract.send_tokenAirdrop(
+                invalidTokenAddress,
+                getAddressFromEntity(sender),
+                toAddress(receiver).toHexString(),
+                DEFAULT_TOKEN_AIRDROP_AMOUNT,
+                DEFAULT_TINYBAR_VALUE);
+
+        // Then
+        assertThatThrownBy(functionCall::send).isInstanceOf(MirrorEvmTransactionException.class);
+    }
+
     @ParameterizedTest(name = "Airdrop non-fungible token to a(an) {0} that is already associated to it")
     @MethodSource("receiverData")
     void airdropNFT(final EntityType receiverType) {