Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '324fee805131f797099d439bb2d19da790d064c0410ad2bfa52d9760d6b91c3b' 
  AND token = 'KvSCrvGjmLTleUeeEpk46AAhBMZiF5iqpMNJ5cXuk2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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