Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a49b58ac370092fb67578a4f4a68c207cc38d03c7851320a86f2926f63709b47' 
  AND token = 'pNnEMSslORr8GiebccOwBpzs/RAYm7aKdTUyazRY/ss=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00078

JSON explain

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