Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05edba27f0465d575ab1155635a068409afa833fb4856163ddf8ed4aa098fef1' 
  AND token = 'f+ENvPOAOLf556KuWBdf+gPlZ8YxrP4I+YPBfjB8J4c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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