Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53688316c523799d1847b9d160bdfc0911141ad36dfa530c1e91626b8610a2f9' 
  AND token = 'VjZOBA3YYXkXHYkJkOzltjGbPoFfHkxZkMItpo+8bGY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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