Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3795d4bee3f65ec224c84b64e3b7ecee4e37ddaf12585122cd540f2cefe0202c' 
  AND token = '/MUGuvNZYWitFtHgoKuwqNiRKI34rne2wknu8WP8wwg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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