Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '986be3a3583ac14ddd1059209ac4023b224c67e2252020efdc47b8f10f624e8f' 
  AND token = '05VECbseykJeQ/sYrVfKsstmPGOCNrQHSgpR2VR4mzk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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