Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd73fb7c9a9b5d6c19015399506d0003dfde4596002107d974d11e7af8971f3ec' 
  AND token = '7IsnE9IJjE5pLMV8kj8musjFI2BPPITjCeQT92TPP4s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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