Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5576445453f43425214999201551b44c495ab52ebc55fe84267d1cb7a442d22' 
  AND token = 'Z7gCTJjcNQGXCNSEHAaGPC1xQMvdX/dSTdlb1lbYTIQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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