Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2477f582248053226d447d847713039c777a19aed888ce15d351aed2513691c3' 
  AND token = 'KSmNaI76ukAOpEcUUGHpT+Pad3n5wf4eZsCQSFDHwkU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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