Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8727dc004252be30c292abe5b36eb7513992d8f7dd88a1f33946adb6bd14e840' 
  AND token = 'L3tVi+sWdGxtA2RIyZUB7er0meydMxjOoWiWhzP5YwQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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