Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2468362aa533a7f3d72337d8e0f391debf9af0d441ed5ce05f57a150974883d' 
  AND token = 'gb2QXjHtPyCB3t2GdG2lBZv2pkC9aMadLI7QnIRBARA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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