Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e729e5c2fbfb028db1c671f9823f579ba14694db260f179293e4ea9a3ec9573' 
  AND token = 'bTv31B9ViOcy2dwO6cozfs0XhZItmPJ2Bm/tO/OXSAQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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