Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfecec52760d4152a4bd139064409888977334b717922d80c12e837017380fea' 
  AND token = 'HtX2iijW58TjIm0XBKRp7b3m13tNiyUpI4NIWCrSEfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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