Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c738e496fc445df6cbdf60ebb5587135aed6448818388afc72f6d2d50d564b01' 
  AND token = 'Nk8W1HdqLTXi8qQIepQ5rl2w0zQndO99wSPigWKpj1U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00059

JSON explain

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