Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '114ca8549e5edc18c366503c7dbeb34e6d3f602eb56d48107a356662d49ec429' 
  AND token = '8SRc5LGY4IVZYJ0gMEkxxU9wKPPH1J8ItpN7Hy3abzA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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