Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '226b427012c0516b67737224c298f2cc37450cee4cffe6f3bdb49bf416b84421' 
  AND token = 'NY/3EyQoT57Zk09IrrqASA/jZ0in5DIHUjlakGQB55U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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