Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2146e6188aaee6fc446705988c0344a5988d0126a2d80257a5e724a16b458267' 
  AND token = 'ySgR3zwjr3q2qI/7nUrBLW0GKusjk2sI4s2ln2fPBi4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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