Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '497ed8457cce9d8b4e1c990b7b41d9931f1274730e2b137bd96dbf0d771fc8a6' 
  AND token = 'Uwv+YFc1h83fglgx897s2x6pqrKssExtesDO7gDhm50=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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