Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e05d1668190dcc690b7a2f676df80e89d737a1ca0eb1dbe359208eb7066e4b6' 
  AND token = 'f2pPFlXo0xouJqTgeZVZpE0pzjtQdwuPl4KCMD2Dwyk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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