Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca6fc0bff5d65008a24529fff037e8e16d5d3f7a030823822f956ab387cabe4e' 
  AND token = 'lBTku7uOetvNsHT9uipA0GLnELj5CYfp0rm8kZ96bHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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