Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa35f1184e79204ad842da84c8d9a1c985e12199a8eb8c2eccb23526f9211aad' 
  AND token = 'Sg8eEXYSYgK8tiJQkf1o4j9X+tzHYh42V4Nll520iGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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