Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1325abf89963f9d8f8d433020fff97b2810769ddd3d6d142370cd5b7a80722e' 
  AND token = 'Y6ddwizSRVtKBVWnPTJ3o3v65/F0VxEBvAPW8/GdvfM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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