Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '03dbcc909b8276adf9bf16d8325ba0f815ea35d181ca4045712a5da08e3004b8' 
  AND token = '3L8mmh6fgq531GJAuSGEN2nwFTePMwmfmjSvh4px6+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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