Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1491af57d81cdd34a4af90cdcce3c3979b2be33d2308894482cb04067e4ce69f' 
  AND token = 'sSazjwq8zEyJY3jlQpgo1vNqoWFMUmz4FU1pXT4gPTw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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