SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5e5e89a41a1e077f70e368aa82a93c0d4e9192324c6e05921cad774c14bd2efe' 
  AND token = 'KB6VF3XZYN2Roj7DWjrv1G/1LP2TgGuDdj0wMdiOwz0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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