Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1885cd43836fc866b75297a197d0bc0e6c45b2c899401ee9beadc830fcabbb9b' 
  AND token = 'W9qAz8TPmzZv71Yx1v5/Ey7G3DBxluLxAraiiatyi+c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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