Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20bb212403a26932e46b58c92fe92c20e111378bd6619820f523aa179782c796' 
  AND token = 'd4FCKkK7WZltW6PkOH8OZi+f2F55b1AtS/HQb3ABu50=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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