Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdc044d9f637be42da89e36760b11cbd92d003fd4dad87ecc6d2a3ad8653ce45' 
  AND token = 'mWlWXVPXxY8eJZ2iEB4BMW9S6A2BG7vs0SVysitPIg8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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