SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '085698917784f330aa294c3d5d7bcb894b8eb4a145d1be4f21a18af721caffca' 
  AND token = 'YIQZyXE/QVznXbRLBeDF+YpYoMKPwq5HJzuZ0rfhTuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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