Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ecde8b45f98efaabe2640d873c515ef7d3b9e51981d49d8449a150058bca476f' 
  AND token = 'J0rk04c5jB77KhUlqa24d7eniAf4xQ+t70sDDqKTFmI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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