Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f4b4c099a05d56f6319e5281a689a984cb623f7506f69272d1da77deedc32f5e' 
  AND token = 'W74W1TPe2z/KZPKkfUi6VJzIHl8Xr3dz1FZAM0FxFZM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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