Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27bf555a8ab25f68cc0c224a89d324e7f691d217c31ddcf73c4e54d29c590180' 
  AND token = 'U/uNsMPB210wy0vBpnBGwtqnw/1xwQ5OHtpn3F3Id9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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