Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1c1ee70c61aaeb831a849c667797c27f936a12ccc7cceb8a109580d729fdcf03' 
  AND token = '/JMIRtS5u9JBdT45SvUF47Nh6V3iw8LRUllmrf07Mv0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00081

JSON explain

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