SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '9818d283579ee9914a3f68a004d35775562f45ec3a2fc69bf6efe9ac38c31d36' 
  AND token = '5HYb6alDGp+NZD32zsJwoQ05egHKUi12/VgCzmGcKz8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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