Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4b64223bfbd2e30c0dc034f1f9aef82c3653ea9631010d435205ae562b5d568d' 
  AND token = 'wQS9NoO652O1HTxVPLRZZNQETBRJ7m5AbpYbqIwquoQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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