Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '418bc703b3f42947206275c943aa888ff9a740a4f978691b24a5ff68fbf8f401' 
  AND token = 'yH4Gcmp6A2bF9WwU4omzc0uv34nLAJSam2jTvq1bXFk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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