Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4bd4dee5f6db460a67163b2e93e7b2e2ab70fe5eec04191197cb911dcc24fc67' 
  AND token = 'WhsFQwu20QCVncuXo57j24nctZ+78I+jMAwgagfOoek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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