Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0397f9223915fde10324e07d5856213afced58469d53576a11549b29ebf692b7' 
  AND token = 'anXmj7XLK591gQEKU9hmIP1G+Vp1EuD3z53OdKmdAs0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00075

JSON explain

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