Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3691aa7290e434fb885d1e9c8cb684ffbdba81fc5ca073974ef77a7c9dc4a1b4' 
  AND token = 'jn4RNmJyyK3U2ejTaMV2uZvqvG7kKAYzAOrr7S11iaI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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