Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '462871df7f72cf21fdf02481d30aea22bbe9844a4f90c61ff03da0aa1e623b25' 
  AND token = 'SBjCSdF4Lry5vIMLYCZJ4d465WkP6fMK6VXJOp4ZwMY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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