Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5aa24d80018e6c156ea9196b40e25ba4c582c0b8eb01ca6846f37b3cdde76a5f' 
  AND token = '7HPfAnyAYmDCfa41fbyjryrtDMKuFF9989cWgkjIqo0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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