Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69eaa68542d30fed8758f3cb9bb413c9f216b4fad942912cb39b8aa24588c648' 
  AND token = 'WtgmwapXiDNhgICzS64hcuxzOtnRUA8SVtVA8iYRLfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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