Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '512f10fdc2039ad57a6480446196cf62f79ed49939e038bc1403bb773b1041c4' 
  AND token = 'IcnmXvvg5mDBpJI+nKaDyLg6bViqHkvbOD27xbCAvFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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