Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5de29661e6ad7acc8e72e565d9a9cbf4f2d660474727ca4c1db1f93995685c11' 
  AND token = 'ExFa0KRot5meudi29bhtp+v4KywdDPep5+PatNZnsgw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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