Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb300f259d693fa989cfefae576e6c514c6c805d0f87cb8ea2e45c0d6f96c988' 
  AND token = 'hP1DOIW73W09CnSouIwO+ZZmWlrBOoYAcElTR6xRzs8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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