Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70a93b2081443ca783497243a410cf2792e7e67892550b7a777359a66c72ddd0' 
  AND token = '62WfuDDqcQ2HXAe0MwW8Y/iGpi0iz236CWyy8Fy4wyA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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