Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '560e50f847a92e27ea526c39f9ddfe7487dadc66cf1a78b632cb97788eb8adc8' 
  AND token = 'iLFP7q2OJysG+0yTTDOC+2d1chBLvx/eMizJ26Ap3Xk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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