Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '91372358032775e6156520c93ff5b4af3503644925da66de14c80b7abd43ac28' 
  AND token = 'KARNi+03870S2PWI/d3f8mRIOevEgn/lnrYeSgaaG+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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