Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6538775351962feec47492ef1a303986006509c49bee0a94348c1fe0f0f2a796' 
  AND token = '1ZdnrCqaE57U8RJHddOQrgr+M0+YGSE0bSUtunb4v2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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