Sandbox

SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '2e1de8f1e141c3e6fd48b4c04563005acc3b88f8548ec9382450b1e2cc112c90' 
  AND token = 'G3zv1DTDGBkeqFxfN9sEH9RqwSpDXMxK2d6Yj9hiYvw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}