SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '06cb713ed96e8739c37761158f66f381882d034f668ff3f50746af0a88b1f05c' 
  AND token = '9e/P4CnlmuAjxJRFq4TNKZwVXrUj3RiBy96ugBlPUv0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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