Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '681c58d0699e7d6676e622c19baaa63e07b1ab9994c7e2a61ed3b3ca5e917657' 
  AND token = '+8yyXeVAK1JYm1KU+cNIYvZDeJbts2yPqr0TL2FfwiI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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