Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e3a0618066dd92fdc5c0a4f221f4ee3cbc236576e9638372106d4151760fb8e' 
  AND token = '9IZyTzghKfxZmfQHkMBXS9qQh6WzTsiFhOm5h5DqOtA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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