Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d2fc179c5f917bb59495d9625bf1d9e62c781bc07dc482dd69ea2b945158aa7' 
  AND token = '1ze/ZHcMLbk9SG0GGOIxCAT6lgO8zOe0Xde+N8Ajc5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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