YouTube API - The API Key and the authentication credential are from different projects

I am trying to get videos from youtube with my C# application, with "https://youtube.googleapis.com/youtube/v3/search?forMine=true&order=date&type=video&part=snippet&key={key}&access_token={token}" but I receive this error:

"error": {"code": 400,"message": "The API Key and the authentication credential are from different projects.","errors": [      {"message": "The API Key and the authentication credential are from different projects.","domain": "global","reason": "badRequest"      }    ],"status": "INVALID_ARGUMENT","details": [      {"@type": "type.googleapis.com/google.rpc.Help","links": [          {"description": "Google developer console API key","url": "https://console.developers.google.com/project/{MyProjectCode}/apiui/credential"          }        ]      },      {"@type": "type.googleapis.com/google.rpc.ErrorInfo","reason": "CONSUMER_INVALID","domain": "googleapis.com","metadata": {"consumer": "projects/{MyProjectCode}","service": "youtube.googleapis.com"        }      }    ]  }

But I can see only 1 API Key and 1 OAuth 2.0 Client ID (with Client ID and Client Secret) on https://console.cloud.google.com/apis/api/youtube.googleapis.com/credentials?authuser=1&project={MyProject} site

Could you please help how can I fix this ?

Thanks in advance