Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '22e3cd7098c9ef9f16267d0cfb43ba13ebc4c0ba59c6ebcc50300e76cd9ef0fe' 
  AND token = 'F/Wqd65+ZxsWBI9HFEpA7arOE8hGyOyucufsNIvjY58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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