Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'da430515fa269b5ee61bcb9e90caf4a7e2f5b8b041afa0eec8afb74fdaa5b001' 
  AND token = 'cgmqpqmFzh1WH/4aKHK+iZqQuq2McnKi6C3H1oUBCzA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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