Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0245f86cb7fc4b248eee522afed3f71b626ca795736a4b1698121cad04b031a9' 
  AND token = 'jyxilQGX2I4vffx705eezl5iw8yqKoW1jUEBXMofgAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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