Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '33a6f67a24f353cd1e97e956edf27e82deb240a75891be092968eb94c23cb371' 
  AND token = 'Q8zCxAi3haT2dXyqL52dudkuqJ0qyTEttNTHMs7pBp4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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