Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9006ffeb08112bc61505d6fd3d7ac73d8a3c61935c0df31bd88040060d0760ad' 
  AND token = 'hfIUXc6ugIz/Oluf9XfMHIxry1dq4a3b942ZOgdvCbQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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