Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bc807757d7eddd67177ef9f17987d798abde495a857e756696288ce3ba5bd201' 
  AND token = 'PWBmd5Y/XQ4OMhShXxQ7QHenRbKsU6yqJGw94h6T+yM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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