Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '247258d086a6978f1879dc3e58e923db88536b6e6003990b3dbdf2bcff7e3d24' 
  AND token = 'xVaVN7aRU2Q4YTd1LKjDqI7o/eCrUabI96U+IHLZhfo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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