Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4c9101e84eb749a6ae869d85394d73f94c295a043b036a7cd8d973b50871ddff' 
  AND token = 'qWL16L/1xaNa64EcryHbwuSg/Tl30LcyLyXFnU+qLJo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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