Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd06ee3f96cc6aef125a5cbc632cf2b5a2a68971249dd178712f82fc2ffb11b96' 
  AND token = '9lts8mvbEFJXhoW81Ey7sBlA/MX/MvB01djV36hSs+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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