Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a89b4fe6eead2ca145f91daf6ebd4bc05b3554779b2c59db8deab000517e963f' 
  AND token = 'VfPVXe9sZxkJ2194re7RtopG6nIPUGYRftnQlFdjAw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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