Sandbox

SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'fa18087da833e02f35e8cb4a4ee8bd0c780579dff5629dfe7a749884a3c018f6' 
  AND token = 'RQ54cEeiai8yXcGPbZ/nfEuM7L05zDe5FbzmmgGUouE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}