Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6a064fecfa74416c468ad360a7b9449070ed901f5f1d855d4de73fe3eb20710e' 
  AND token = 'xDo4NWxFnSYTvKU6Pwl24n4Oa4hY7vjI/VsGCftkJoc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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