Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '056173e9aa8890541cc9022f27fbfc835be9910a354811665549351dd82f2e85' 
  AND token = '5je5ifhbV7aNwaVabwK50BA5oLVwWbPO/MVFSWPVHHk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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