Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32e56842d3e963854f0f2427e1399a69b84f86dd78d4dda011af0485dc98b569' 
  AND token = '6IouoozExUsDSQ0kbP6Wk9UYRfBxo5LXCQwIkWUJ/r8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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