Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5fbe21d5291df11c40555b669e587d9347bd5805eb2383fd20b698979a73fc8e' 
  AND token = 'zQYfGfDHhlDPu46jR4GaMSIToQB3mw4M6XG6UeoLHHI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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