Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce1bead7275a0ff9d9fe159ba46f596691c3b5939fbbf282d387369a55579656' 
  AND token = 'bQmSmWlfjqRARX5xsjGbo4OLXb2E0KZ8RSzhRnt+i8o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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