Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14cd92436be12df6ee1a694b91c86f631f85b5c231ce07d7609bbd26a6e66a27' 
  AND token = 'zvWAp8VsNgsBLf8+opzx/GtzD33neYncE56En0RrRyM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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