Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66fbd3e3b135ac00e83c470e1ba82eee046833654f00c7082dc0c9d3bd4b1103' 
  AND token = 'rXxcsuAh5i/8BK2xkH/u+IwW0A+OraLraIqhv+tMutw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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