Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0efdbfa1c10786657769dd5dc5a754d1d7bce5d6fa361cc02cc6e5b3db22d213' 
  AND token = 'dbwT1l/h+AYud1H3/NsHba4V0jsoZi52ELkIxS9iQaA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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