Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69d76e57b0233bb5835278f157e02345fc74d4ca7257b449493ae842773ca3e7' 
  AND token = 'yTmb0HQCx7eXatfTcZBp08yP21fzEU9J+oLGrmc+A5c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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