Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09f365e4eab8435596eea76ed59810eb7a55362ac838ca0581551f5761ff08af' 
  AND token = 'xYZghSg9Z2AEGFetxVfo/CWXxDQFrPyAWiLnL48LVCo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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