Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec3a033ecb2a1ba7af957fa1c2ddfc522621467a1045625e0628140d7992d1fe' 
  AND token = 'RJghpOvMnzYc+fXGjvtofcwWJb1Y7/deuHJmaTuudeU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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