Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '26eea295e8f836da46de3b51a82015e91497a972f2f8d68e62d2e8ed692aba62' 
  AND token = 'tu5Rc2nx5IpaBWr2B6bw8RBwzj7idom7ZjfCs0XHZkI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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