Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53715cca3cbf446b2378a9f52ab50c691d591d90731b170d5b03d9fbe5464e2e' 
  AND token = '5El8K3K+OkByLjTUV5V69e2cV2GS4Y0SWq77UIgbxXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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