Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c21135520c5c4af17b8e9e6617a1e7667ef9cbdb323c267f31787a7728d48e6' 
  AND token = 'uwl5H2PW5mIN7yHmN5605PKMVozHEpDGqedWKH0cNIw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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