Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd16a458b16032d80e061c99f53ed38a80f0f0ffc59d24c5561095cb564fb0490' 
  AND token = 'AyVpDrIAPq5WRmQ3KrLhd5fARqgYeNYrPd8wnJQuJ1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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