Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e0ff56db5aab729b19ee3a8e43335e4716fbdd848ad23405e13d770a989e6af' 
  AND token = 'mv12au5uM7eaxrlnHP6XWlN5BGZ9jSRU4nHyXWCkx0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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