Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e8cb116ebb7c5603146454994bfd4f3d49d3c4496d38eb16995c820d59b6a6b' 
  AND token = 'MW8wQbPH1wH6qXniiK75B5BgRn6nfkCQOoiS1ycHJSA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00107

JSON explain

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