Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '47b32cb6637844040d0225806099666131c3d554041e1cb7c28fb7ccee86ba53' 
  AND token = 'pQbRUQUdhArSQ1PpCyhps7nUgwWkQoreBh+nMY8ah94=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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