Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '19c30649297a9b754ac58c49d394f3218a665da49ee769a7bfb3a62b1097eb18' 
  AND token = 'gouFhpdncGpPYSuUfbFK4uoQA+8dqtbBlIIddZ15slU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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