Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c6e0c046bc48b869323cbd4b80244e76879a801e104a85d3ab68b0ee2687356f' 
  AND token = 'WHBD4aGb422n1Uv1dw4ZZJRXMfN9X+MD6DGlBl7JTQk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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