Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '8203522f987afe21a6c9772c3358d219d3e02f656e01f9b45818022efad04be4' 
  AND token = 'gIcV5MBlFjREjK3t71e6y+xB6dQFvp76t6XB2bTmFt8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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