Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '129721f6d763c6c359b40b0f43c55b306f87e8c185ea425d3a05dbbbb9115e37' 
  AND token = '6VBo9rYuDrr21JcSAh/YzYI3n5F3THSYEw95W3O3P7c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00073

JSON explain

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