Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65a36f6c2a1c317187d2d474ccef2faa84a89c9a52e434752a7b9c102ee33f61' 
  AND token = 'DvxJ3t3jV89+YtU59VUEnwrl2jOqTXhr1DfIstyY3dc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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