Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '929c8e4ffdae7058413c36a86db64faa1c2c66af7617b4b7af2b6eb2e5a1a7ee' 
  AND token = 'uvH+CyDblZilNCywqMWX0sWMgSRciN51MHDDIAdhHOw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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