SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '6aa279fc48276174549258ae8cdf7fd177a331eba226795d5103a0534ef11d93' 
  AND token = 'RINkd2o/6OhEqGApe8sIYGCaBwZfN6Z3HTYcY/IIufw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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