Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9a39ec4f1f62ef10d492a40bbd6212e98f61be524b3f532978b73e717b53f357' 
  AND token = 'oeUSl08dpbsnjMpOvfOQ+o+joA9AAJ9WChNwgz7IR6o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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