Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0511a3b28f02893b22c775e211fa411569f771d6e91dfa7b5e59fd88a80fd54d' 
  AND token = 'E5cisXa5kffugl5v1gJ2p9W7e9DiRutA4pUWhVxmyHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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