Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdea386181d70962c375810c323480b18f21538763125444af983a82e7f404d2' 
  AND token = '6D9DYQUBGBe8zXC22mcdkGJhsNvGmleti1fqlD/Wyrs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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