Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f055e2aacd35db26b8e555cbbe614919b9a9f75df0a1787d72125150ca428e7' 
  AND token = 'XKCKOrG2LXGLPqGrl9SiE8meQnShhWjlXJJm+eT7nWA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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