Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e936262ba7f98c36d04a7d8420c7901d04f0ad2294a44711c207d01f605b9a7' 
  AND token = '1RlfMqNJJEZGECeA1hnydreQ19bIIAfruY2COgWWhIw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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